Back to articles
Articles
Volume: 26 | Article ID: art00090_2
Image
Inkjet Printing Approach to Fabrication of Non-sintered Dielectric Films and 3D Structures
  DOI :  10.2352/ISSN.2169-4451.2010.26.1.art00090_2  Published OnlineJanuary 2010
Abstract

With the current explosive growth of information communication technologies, it is required to realize 3D system integration of hetero-materials such as organic and inorganic materials with multi-functionality based on information-, nano-, bio, and energy technology. The direct-writing by the inkjet printing has significant attention since it is feasible to pattern and fabricate fine features directly from design or image file. In this presentation, we have formulated ceramic suspension inks (Al2O3 and BaTiO3) and synthesized Ag conductive ink to print dielectric films and 3D circuitry such as metal-insulator-metal (MIM) capacitors and metal-via-metal interconnects. Inkjet-printed dielectric films were prepared without high temperature sintering process. Instead, a polymer resin was infiltrated through the inkjet-printed ceramic films and cured at 280°C. Since our goal is to fabricate non-sintered ceramic films, it is preferred that the inkjet-printed ceramic films should have a high packing density of more than 60%. High packing density leads to the inkjet-printed worth better electrical and mechanical properties. Roughly about 40% of micro-voids inside the inkjet-printed ceramic films were filled with the resin. The dielectric property measurement of the inkjet-printed Al2O3-resin hybrid films indicated that dielectric constant and dielectric loss are 6 and 0.003, respectively at 1 MHz In the case of inkjet-printed BaTiO3-resin films, their dielectric constant and dielectric loss at 1MHz are 75 and 0.009, respectively. And we could fabricate all inkjet-printed embedded capacitor having MIM structure and daisy structure having metal-via-metal interconnection for 3D integration. The MIM capacitor consisted of 4 hybrid films that was placed Al2O3-Ag-BaTiO3-Ag hybrid layers in order from below. In daisy structure case, the conductor patterns of lower and upper layer were built up each other with the Al2O3 films, and micro via was formed by laser drilling process then filled with Ag paste for interconnection between the conductor patterns.

Subject Areas :
Views 26
Downloads 3
 articleview.views 26
 articleview.downloads 3
  Cite this article 

Jongwoo Lim, Myung-sung Hwang, Jihoon Kim, Young Joon Yoon, Ho Gyu Yoon, Jong-hee Kim, "Inkjet Printing Approach to Fabrication of Non-sintered Dielectric Films and 3D Structuresin Proc. IS&T Int'l Conf. on Digital Printing Technologies and Digital Fabrication (NIP26),  2010,  pp 723 - 725,  https://doi.org/10.2352/ISSN.2169-4451.2010.26.1.art00090_2

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 2010
72010410
NIP & Digital Fabrication Conference
nip digi fabric conf
2169-4451
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA